ok, i have been to:
Iberostar quetzal/toucan (its listed as 2 seperate resorts but they are connected) (in Mexico, south of cancun)
Iberostar Haciemda Dominicus (i am almost 100% positive it was this one, lol)
I cant remember the other ones, so let me know if you want more names cause i would be happy to call up the rents and ask (i just cant now cause they are at work)
When looking at tripadvisor.com, you will see many mixed reviews, mainly dealing with the food and the language barrier. My whole family and i LOVED the food...no issues whatsoever...its an all you can eat buffet 3x a day.,,,sooooo good.
The language barrier wasnt much of an issue at all i didnt think. Its just some of the workers who dont speak great english...but for crying out loudm you are in another country!!!! The vast majority speak flawless english anyways.
Anyways, we always had great experiences with the all inclusive. the best part is not having to interrupt your day at the beach to eat...cause they have food right by the beach...just throw a sarong on, and you are ready to eat!
The one place we didnt like so much was on the pacific side of mexico...the beach was really rocky, and my grandparents didnt like it cause there were too many steps in the resort...sooo maybe just avoid the pacific side??
i dunno personnally i LOVED all the trips...i could never understand some of the bad reviews